Proposal for an athermal, fabrication-tolerant and flat-topped CWDM (de)multiplexer based on cascaded silicon Mach-Zehnder interferometers

Zixu Xu; Yaocheng Shi

doi:10.1117/12.2602555

9 October 2021 Proposal for an athermal, fabrication-tolerant and flat-topped CWDM (de)multiplexer based on cascaded silicon Mach-Zehnder interferometers

Zixu Xu, Yaocheng Shi

Author Affiliations +

Proceedings Volume 11894, Optoelectronic Devices and Integration X; 1189407 (2021) https://doi.org/10.1117/12.2602555
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

An athermal, fabrication-tolerant and flat-topped 4-channel coarse wavelength-division multiplexing(CWDM) (de)multiplexer based on cascaded Mach-Zehnder interferometers (MZIs) was proposed in this paper. A combination of strip waveguide and slot waveguide is utilized for athermalization and flat-topped transmission. By optimizing the waveguide widths and lengths of two arms in each MZI, the influence of temperature and waveguide broadening can be compensated. The best temperature dependent center wavelength shift of the four channels is about 12 pm/K, and the best waveguide broadening dependent center wavelength shift is about 0.06nm/nm, while the 1- and 3-dB bandwidths are ~14nm and ~19nm with 20nm free spectral range (FSR) and the crosstalk is < −20dB at center wavelength by utilized the power splitters based on the bend directional couplers.

Conference Presentation

Citation Download Citation

Zixu Xu and Yaocheng Shi "Proposal for an athermal, fabrication-tolerant and flat-topped CWDM (de)multiplexer based on cascaded silicon Mach-Zehnder interferometers", Proc. SPIE 11894, Optoelectronic Devices and Integration X, 1189407 (9 October 2021); https://doi.org/10.1117/12.2602555

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available